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/*
* Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/**
* @test
* @bug 4920005 4882798
* @summary make sure redefineClasses throws NullPointerException in the right places.
* @author Robert Field as modified from the code of Gabriel Adauto, Wily Technology
*
* @run build NullRedefineClassesTests
* @run shell MakeJAR.sh redefineAgent
* @run main/othervm -javaagent:redefineAgent.jar NullRedefineClassesTests NullRedefineClassesTests
*/
import java.lang.instrument.ClassDefinition;
import java.lang.instrument.UnmodifiableClassException;
public class
NullRedefineClassesTests
extends ASimpleInstrumentationTestCase
{
/**
* Constructor for NullRedefineClassesTests.
* @param name
*/
public NullRedefineClassesTests(String name) {
super(name);
}
public static void
main (String[] args) throws Throwable {
ATestCaseScaffold test = new NullRedefineClassesTests(args[0]);
test.runTest();
}
protected final void
doRunTest() throws ClassNotFoundException, UnmodifiableClassException {
testNullRedefineClasses();
}
public void
testNullRedefineClasses() throws ClassNotFoundException, UnmodifiableClassException {
boolean caught;
// Test that a null argument throws NullPointerException
caught = false;
try {
fInst.redefineClasses(null);
} catch (NullPointerException npe) {
caught = true;
}
assertTrue(caught);
// Test that a null element throws NullPointerException
caught = false;
try {
fInst.redefineClasses(new ClassDefinition[]{ null });
} catch (NullPointerException npe) {
caught = true;
}
assertTrue(caught);
// Test that a null element amonst others throws NullPointerException
caught = false;
ClassDefinition cd = new ClassDefinition(DummyClass.class, new byte[] {1, 2, 3});
try {
fInst.redefineClasses(new ClassDefinition[]{ cd, null });
} catch (NullPointerException npe) {
caught = true;
}
assertTrue(caught);
// Test that a null class throws NullPointerException
caught = false;
try {
new ClassDefinition(null, new byte[] {1, 2, 3});
} catch (NullPointerException npe) {
caught = true;
}
assertTrue(caught);
// Test that a null byte array throws NullPointerException
caught = false;
try {
new ClassDefinition(DummyClass.class, null);
} catch (NullPointerException npe) {
caught = true;
}
assertTrue(caught);
}
}
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